how many people know about the jet sizes on a gk71f? did you guys that a 71f runs bigger jets on no 2 and 3 cylinders to keep them cooler

um .... this is the Yamaha forum

OOOOPS!

Moved to the GSXR section.

Check the manual for a definite but they regularly put jets a couple larger in the middle cylinders.

Hi Bart, was going to ask about these carbs myself today, you beat me to it ! 1st question, what is the name of these twin carbs, looks like ACSAM ,never heard of them. Took one pair of mine apart today & found 2x 98's mains in one pair & 2x 94's in the other, all four pilots are 34's. Wanted to change some jets butnot the same as mikuni,s. Can jets for this carb be bought ?

hi mike, the carbs are 4x30mm Aison c.v. ones on this bike. the jet sizes on my bike are ,mains 100/inner,96/outer,,bigger jets for cooling no 2/3 cylinders. as for parts for this bike you could try cms motorcycle parts,very hard to get parts now,o ring seals on jets must be fitted also,refit and balance/tune...hope this helps!!

To be honest, these are a spare pair I bought, which I suspect are from a gk71b,slightly different from the ones on my 71f & with slightly smaller jets than yours. Was going to get these ready & put them on my main bike temporary while I check the ones on the bike. What size are your pilots?

pilots are 34, never came across other sizes on these jets? make sure they are clean,tiny holes in there! cheers! you can buy them from cms...

Hi, interesting to hear about middle cylinders needing bigger jets, I think someone's cocked up & put the bigger ones in the right hand pair on these.gonna get my main set off again & check them ,cos bikes still not quite right, don't think I cleaned needle jets properly,ie didn't take them out.